Class 12 NEET Chemistry Solutions Questions

Molecular weight of NaOH=40
2.5 litre of 1M‌NaOH solution contain 40×2.5g‌of‌NaOH
3 litre of 0.5M‌NaOH solution contain 40×0.5×3g of NaOH
If these two solutions are mixed, the volume of the resultant solution =(2.5+3)=5.5 litre.
5.5 litre of the resultant solution contain 40(2.5+1.5)g of NaOH
1 litre of the resultant solution contain

40×4

5.5

g of NaOH =

40×4

5.5×40

‌mole of NaOH
The molarity of the resultant solution=0.727≈0.73M